Sex Linked Traits

What is the primary function of platelets in the human body?

• To transport oxygen

• To fight infections

• To help in clotting of blood

• To carry nutrients

What does it mean if a trait is 'sex-linked'?

• The trait skips a generation

• The trait is linked to the sex chromosomes

• The trait is dominant

• The trait is influenced by environmental factors

Why are males more likely to express recessive sex-linked traits like hemophilia?

• Males have two X chromosomes

• Males have one X and one Y chromosome

• Males have two Y chromosomes

• Males do not have any sex chromosomes

In a Punnett square for hemophilia, what does the genotype XHXh indicate about a female?

• She has hemophilia

• She is a carrier of hemophilia

• She is not affected and not a carrier

• She has other genetic disorders

What is the probability that a son will have hemophilia if his mother is a carrier (XH Xh) and his father does not have hemophilia (XH Y)?

• 25%

• 50%

• 100%

• 75%